synchronizedブロック及び方法応用

package test;

class Obj implements Runnable {
	public void fun1() {
		synchronized (this) {
			System.out.println(Thread.currentThread().getName() + " ");
			try {
				System.out.println("fun1() ");
				Thread.sleep(10000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			System.out.println(Thread.currentThread().getName() + " ");
		}

	}

	public synchronized void fun2() {
		System.out.println(Thread.currentThread().getName() + " ");
		System.out.println("fun2() ");
		System.out.println(Thread.currentThread().getName() + " ");
	}

	@Override
	public void run() {
		if (Thread.currentThread().getName().equals("T1")
				|| Thread.currentThread().getName().equals("T3")) {
			fun1();
		} else {
			fun2();
		}
	}

}

public class ThreadSynchronizedTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Obj obj1 = new Obj(), 
			obj2 = new Obj();
		Thread 	T1 = new Thread(obj1), // T1,T2 ， Obj1
				T2 = new Thread(obj1), 
				T3 = new Thread(obj2); // T2,T3 ， Obj1，Obj2
		T1.setName("T1");
		T2.setName("T2");
		T3.setName("T3");
		T1.start();
		T2.start();
		T3.start();
	}

}